Support upload to S3 buckets with Object Lock enabled

[yoni-yad2]

Is your feature request related to a problem? Please describe.
Currently when trying to upload a file into an S3 bucket which has Object Lock enabled, this error shows:

InvalidRequest: Content-MD5 HTTP header is required for Put Object requests with Object Lock parameters

Describe the solution you'd like
Calculate MD5 hash for the file and upload it in the request header along with the file.

Describe alternatives you've considered
Disabling Object Lock on the S3 bucket temporarily to be able to upload the file.

Additional context
Discussion about workarounds for this issue

[dkocher]

This would need to be set conditionally depending on the object lock configuration ¹ of the bucket.

Footnotes

1. https://docs.aws.amazon.com/AmazonS3/latest/API/API_GetObjectLockConfiguration.html ↩

[dkocher]

This would need to be set conditionally depending on the object lock configuration 1 of the bucket.

Footnotes

1. https://docs.aws.amazon.com/AmazonS3/latest/API/API_GetObjectLockConfiguration.html ↩

It would probably be easier to just set the Content-MD5 unconditionally for al uploads.

[dkocher]

Reference Using Content-MD5 when uploading objects ¹

Footnotes

1. https://docs.aws.amazon.com/AmazonS3/latest/userguide/checking-object-integrity.html#checking-object-integrity-md5 ↩

[dkocher]

Looks like instead we can use one of

x-amz-checksum-crc32: ChecksumCRC32
x-amz-checksum-crc32c: ChecksumCRC32C
x-amz-checksum-sha1: ChecksumSHA1
x-amz-checksum-sha256: ChecksumSHA256

[dkocher]

Fix does not apply for multipart uploads.

[dkocher]

Fix does not apply for multipart uploads.

We previously came to the conclusion in f7977d0 that the x-amz-checksum-sha256 must be omitted for parts.